Will I need fasteners to mount this, or do they come with it?

Fasteners are not confirmed as included. Source stainless or zinc-plated bolts that match your original grille frame hardware before installation.

Does the dark argent finish need prep work before I install it?

The finish is ready to bolt on as-is. If you want to polish or seal it for extra durability, light detailing with automotive wax works well — no primer or paint needed.

What if the grille doesn't sit flush after I bolt it down?

Test-fit it first without fully tightening. Factory mounting points should align, but frame wear or previous repairs sometimes require minor bracket adjustment. Tighten gradually and check fitment at each corner before finishing.